Leather-splitting machine



(No Model.) 3 Sheets-Sheet 1. A. HULL.

LEATHER SPLITTING MACHINE.

No. 379,700. Patented Mar. 20, 1888.

INVENTOR LLLLLE S WITNESSES: 1|I|||| Jim-n ATTORNEYS.

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(No Model.) 3 Sheets-Sheet 2. A. HULL.

LEATHER SPLITTING MACHINE. No. 379,700. Patented Mar. 20, 1888.

WITNESSES: INVENTOR l BY .z zu 4;

I V ATTORNEYS.

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UNTTED STATES PATENT OEErcE.

ALBERT HULL, OF NElV BOSTON, MASSACHUSETTS.

LEATHER-SPLITTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 379,700, dated March 20, 1888.

(No model.)

To aZZ whom it may concern.-

Be it known that I, ALBERT HULL, of New Boston, in the county of Berkshire and State of Massachusetts, have invented certain new and useful Improvements in Leather-Splitting Machines, of which the following is a full, clear, and exact description.

My invention relates to machines for splitting leather; and its objects are to secure a uniform adjustment of the gage-roll and knife parallel to each other throughout their length, and to provide means for adjusting the plate with facility and safety to the attendant, and to prevent injury to the attendant by the hitching up of the leather while being acted upon by the machine, thereby contributing to the rapid, effective, and economical operation of the machine.

The invention consists in the construction and arrangement of parts of the leather-splitting machine, hereinafter particularly de scribed and claimed.

Reference is to be had to the accompanying drawings, forminga part of this specification, in which similar letters of reference indicate corresponding parts in the several views.

Figure 1 is a plan view of the machine with the gage-roll and its beam broken out. Fig. 2 is an end view of one of the nuts for tight-- ening the bolts which held the knife to the bed of the machine. Fig. 3 is a side view of the same, partly broken out and in section. Fig. 4 isa side view of one ofsaid bolts with its nut removed. Fig. 5 is a rear elevation of the machine with parts broken out, and Fig. 6 is a cross-sectional View taken on the line so 00 in Fig. 1.

The machine A is provided with supports 13, and in boxes 0 in pillars O on the bed of the machine isjournaled a beam, D, carrying a gage-roll, E, which is held in place on said beam by set-screws e, said beam being pro vided with a hand-lever, F, and said machine is further provided with a shaft, a, carrying at either end a pinion, b, and pulley c, and a journal or shaft (Z, carrying a gear-wheel, c, all of which parts have the usual construction and relative arrangement, the pulley being connected by belting (not shown) with any suitable and preferred motor.

Centrally upon the pillars O, lsecure by proper bolts or screws circular metal dials f, of suitable size and thickness, which are each provided with a series of radial graduationmarks, f, distinguished by figures ranging from zero to any desired number, sixteen graduation-marks being shown on said dials in Fig. l of the drawings, and said dials are centrally apertured in alignment with the usual apertures in the pillars O for the passage of the gage-screw to a bearing on the journalboxes of the gageroll beam.

The gagescrews G, of proper size, are provided with the usual handle. Upon their body, and between their handle and threaded portion, is loosely fitted a sleeve, 9, having integral therewith at its lower end aring or flange, g, as shown in Fig. 6 of the drawings, in which ringed sleeve is seated in any proper manner an outwardly and downwardly curved index or pointer, 9, adapted, when the screw is re volved, to travel over the graduations on the dials, the sleeve having vertical play on the body of the screw as it is revolved and being fixed to the body of the screw in desired position by a suitable set-screw. If preferred, a ring or flange 9* alone, adapted to be fixed in place by a set-screw and having vertical play on the body of the screw, may be substituted for the ringed sleeve, in which ring the pointer or index 9 may be seated in any proper manner.

The knife H is of the ordinary construction and rests upon the solid portion h of the bed of the machine, and is provided with a series of countersunk apertures, h, to receive elongated bolts LWhich extend downward through sockets in the bed of the machine, and are threaded at their lower ends to receive four winged clamping-nuts, i the wings of which are transversely apertured to receive a proper tool for turning them to place.

To the rear face or breast of the solid portion of the bed of the machine I secure by bolts or screws an elongated metal frame, J, having a series of vertical aligning apertures,j, in its upper and lower members, the apertures in the lower member being threaded to receive threaded spindlesj, passing through the upper aperturesj and adapted to bear with their points beneath the knife, and squared at their lower ends to receive a wrench. Said spindles are of such a length that they project below the bed of the machine to allow the attendant to apply a wrench or other tool thereto without the necessity of groping for them beneath the machine or crawling under the machine for that purpose.

The portion is of the part called the plate of the machine is adapted to rock upon the shaft journaled in lugs Won the frame, by the operation of the lever 'L, attached to the shaft Z, journaled on the machine at the rear of the portion 7a and carrying cams l, acting upon curved arms 70" integral with the under face of said tilting portion k, all of which parts are of the usual construction and relative arrangement. Said tilting portion is provided with a series of threaded vertical apertures, 7a, to receive screw-bolts M, which pass through bossesm integral with the under surface of said tilting portion,which bolts are adapted to bear at their points beneath aspring-plate, n, bolted at its rear end to said tilting portion, and are squared at their lower ends to receive a wrench. Said bolts M, like the bolts I and spindlesj, are also of such a length that they project below the body of the machine to permitof the ready application of a wrenchthereto without the necessity of crawling beneath the machine forthat purpose. Upon the plate a is bolted, by the same bolts which secure the plate a, a plate, a, over which the leather is guided on its way to and between the gage-roll and knife.

0 is a metal winding-cylinder integral with the journals or shaft d and having recesses 0 in its sides, and to said roll, over its solid portions, are bolted lags o, of wood, conforming to the shape of the cylinder 0 and projecting a short distance over the recess 0 at one of their extremities, a space, 0 intervening the solid portions of said roll and said lags.

The gage roll beam is raised by its lever to the position shown in Fig. 5, and the leather to be operated upon being passed over the bed and knife and the end of the same turned into the space between the winding municated to the pulley-shaft, its pinion engages the geanwheel on the shaft of the wind ing-cylinder, and the leather is drawn against the edge of the knife over and around the winding-cylinder until the leather has been split to its opposite end, the portions of the leather which are cut away falling through the machine to the floor. The gage-roll beam is then raised again, the leather is withdrawn from the winding-roll, and its split portion is passed over the bed and knife and caught on the windingcylinder, and the gage-roll beam being again lowered to place the remaining portion of the leather is split or reduced to a thickness equivalent to that of the other portion in the same manner.

The enlargement by the lags on the winding-cylinder enables the attendant to hold the leather thereon and avoid hitching up and the consequent danger of broken hands and arms.

Having thus fully described myinvention, whatI claim as new, and desire to secure by Letters Patent, is-

1. In combination with rolls of the character herein described, adjusting-screws in connection with the journals of such rolls and carrying an index, and a graduated dial traversed by said index, whereby the adjustment of said screws and such rolls is uniformly effected, substantially as herein set forth.

2. In a leather-splitting machine, the combination, with its gage-roll and its beam and dials having radial graduations thereon fixed above the journals of said beam, of gagescrews passing through said dials to a bearing on the journal-boxes of said beam and carrying a pointer adapted to travel over the graduations on said dials as the screw is revolved, substantially as shown and described, for the purpose herein set forth.

3. In a leathersplitting machine, the combination, with its knife, of an elongated metal frame-fixed to the breast of the machine, and a series of threaded spindles adapted to be vertically adjusted in said frame against the under surface of said knife, substantially as shown and described, for the purpose herein set forth.

4. In aleather-splitting machine, the combination, with the tilting portion of its bed and its plates, of a series of elongated screwbolts adapted to be vertically adjusted in said tilting portion against'the under surface of said plates,isnbstantially as shown and described, for the purpose herein set forth.

5. A winding-cylinder for leather-splitting machines, consisting of a main body longitudinally recessed throughout its length, and lags bolted thereto and extending partially over the recessed portion thereof, substantially as herein shown and described.

" ALBERT HULL.

Witnesses:

F. W. HANAFORD, C. SEDGWIOK. 

